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Finding the Fourth Proportional to 8,609.08, 12,893.12 and 5,979.21

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Solution

The fourth proportional to 8,609.08, 12,893.12 and 5,979.21 is: 8,954.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,609.08 : 12,893.12 = 5,979.21 : x
  2. Step 2: Convert to fraction form
    8,609.08/12,893.12 = 5,979.21/x
  3. Step 3: Cross multiply
    8,609.08x = 12,893.12 × 5,979.21
  4. Step 4: Simplify right side
    8,609.08x = 77,090,642.14
  5. Step 5: Solve for x
    x = 77,090,642.14/8,609.08
  6. Step 6: Final answer
    x = 8,954.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.